[metapost] paucity of i/o files

[Hans Hagen]

Taco Hoekwater wrote:

> You *can* close a file, by sending a string consisting solely of
> an ascii zero to it.  The following should work. If it does not,
> it is a bug in OzTeX.

there are/were some more weird things with files, (sometimes you need to open 
them twice to it done); time for a revision

>   string s;
>   for a := 1 upto 100 :
>     s := "wr_file" & decimal(a) & ".xps";
>     write s to s;
>     write EOF to s; % that's char 0, defined in plain.mp
>   endfor;
>   end
> 
> I am not at all sure that this is documented, though. ;-)

no

Hans

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